/*
 * @(#) $Header$
 *
 * Copyright (C) 2010  Daniel Léonard
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

package ca.forklabs.crypto;

import java.security.spec.AlgorithmParameterSpec;

/**
 * Interface {@code Parametrizable} provides an anchor for message digests that
 * can have different parameters. This is the case for
 * {@link ca.forklabs.crypto.md.SNEFRU} and {@link ca.forklabs.crypto.md.HAVAL}.
 *
 * @author   <a href="mailto:forklabs at gmail.com?subject=ca.forklabs.crypto.Parametrizable">Daniel Léonard</a>
 * @version $Revision$
 */
public interface Parametrizable {

   /**
    * Changes the current parameters. It also reset the message digest.
    * @param   param   the new parameters.
    */
   public void setParameters(AlgorithmParameterSpec param);

   /**
    * Gets the current parameters of the message digest.
    * @return  the current parameters.
    */
   public AlgorithmParameterSpec getParameters();

   }
